cue modules: move stdlib to pkg/alpha.dagger.io

In preparation for Europa, we will vendor multiple CUE modules:

- `pkg/alpha.dagger.io`: legacy non-europa packages
- `pkg/dagger.io`: core Europa packages
- `pkg/universe.dagger.io`: Europa universe

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

pkg/alpha.dagger.io/graphql/graphql.cue

@@ -0,0 +1,39 @@
+package graphql
+
+import (
+	"encoding/json"
+
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/http"
+)
+
+#Query: {
+	// Contents of the graphql query
+	query: string
+	// graphql variables
+	variable: [key=string]: _
+	// graphql url
+	url: string
+	//API Token
+	token: dagger.#Input & dagger.#Secret | *null
+
+	post: http.#Post & {
+		"url": url
+		request: {
+			body: json.Marshal({
+				"query":   query
+				variables: json.Marshal(variable)
+			})
+			header: "Content-Type": "application/json"
+			token: token
+		}
+	}
+
+	payload: {
+		data: {...}
+		errors?: {...}
+	}
+	payload: json.Unmarshal(post.response.body)
+	data:    payload.data   @dagger(output)
+	errors?: payload.errors @dagger(output)
+}

pkg/alpha.dagger.io/graphql/tests/graphql.cue

@@ -0,0 +1,55 @@
+package graphql
+
+import (
+	"encoding/json"
+
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/docker"
+	"alpha.dagger.io/os"
+	"alpha.dagger.io/http"
+)
+
+TestDockersocket: dagger.#Stream & dagger.#Input
+
+TestQuery: {
+
+	run: docker.#Run & {
+		name:   "graphql-faker"
+		ref:    "apisguru/graphql-faker"
+		socket: TestDockersocket
+		ports: ["8080:9002"]
+	}
+
+	// Waits for TestRun to finish initializing
+	Testhealth: http.#Wait & {
+		url: "http://localhost:8080/graphql?query={%7BallCompanies%20%7B%0A%20%20%20%20id%0A%20%20%7D%0A%7D}"
+	}
+
+	queryWithoutToken: #Query & {
+		url: Testhealth.url
+		query: #"""
+			{
+				company(id: "NjExNjAwMjE5Nw==") {
+					id
+				}
+			}
+			"""#
+	}
+
+	testRaw: os.#Container & {
+		image: alpine.#Image & {
+			package: jq: true
+		}
+		env: STATUS: "\(queryWithoutToken.post.response.statusCode)"
+		shell: args: ["--noprofile", "--norc", "-eo", "pipefail", "-c"]
+		files: "/content.json": {
+			content: json.Marshal(queryWithoutToken.data)
+			mode:    0o500
+		}
+		command: #"""
+			test "$STATUS" = "200"
+			test "$(cat /content.json | jq '.allCompanies | length')" -gt 1
+			"""#
+	}
+}